I know it seems like a stupid question but, What are "Missions Completed".
When you are in the lobby and you scroll to the right after highlighting a player there is a category for missions completed and I can't find anyone that can definitively tell me how the number is derived.
I have around 130 missions completed, but I play with players that I think are much stronger than me, that have 30-40 missions completed even though they have played more than twice the amount of games as me. I have around a 80% challenge completion rate... just like most of my teammates... and I don't play multiplayer or campaign mode because they are lame and my gaming time is very limited.
What the hell am I doing right? Or is this just a glitch?